arsenic

US /ˈɑːr.sən.ɪk/
UK /ˈɑːr.sən.ɪk/
"arsenic" picture
1.

the chemical element of atomic number 33, a brittle, metallic-grey, highly poisonous metalloid.

:
Arsenic is a highly toxic element.
是一种剧毒元素。
Traces of arsenic were found in the old well water.
在旧井水中发现了的痕迹。